Machines



- 4 Sheets-Sheet 1.

(No Model.)

. G. WENNER.

MOTOR FORL'EMBROI'DERING MACHINES.

Patented Mar. 28,1882= (No Model.) 4 Sheets-Sheet '2.

1 G. WENNER. MOTOR FOB. EMBROIDERING 'MAGHI NES.

Patented Mar. 28, 1882.

N. PETERS, PlwlwlJflmgmpher. Waillinglom DJ;

4 Sheets-Sheet 3.

m5 Model.)

0. WENNER.

MOTOR FOR EMBROIDERING MACHINES. No. 255,710.

Patented Mar. 28,1882.

N. PETERS. PlmlmLilhngmplwr. Wzslringlcmh. C.

To all whom'tt may concern.-

UNIT D- STAT S ATENTT ()FFICE.

oA'nL WENNER, OF S1.GALLEN, SWITZERLAND.

MOTOR FOR EMBROIDERING-MACHINES.

SPECIFICATION. forming part of Letters Patent No. 255,710, dated March 28, 1882." Application filed July 19, 1881. (No model.)

Be it known that .I, CARL WENNER, a citizen of Switzerlamh'residing at St. Gallen, in the canton of St. Gallen, Switzerland, have invented certain new aud'useful Improvements in Flat-Stitch:Embroidering-Machines in Wot king them by Motive Power; and I do hereby declare the following to be afull, clear, and

ex'actdescription of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being bad to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention consists in the hereinafter-deqscribed mechanism, constituting a-motor for that class of embroiding machinery in which reciprocating carriages carrying pinchers and needles operate in connection with a workholding frame controlled by a pantograph.

In the accompanying drawings, Figure 1 is an end view of a flat-stitch embroidering-machine, showing part of thedriving apparatus. Fig. 2 is a side elevation of part of the driving machinery. Fig.3 is a detail view. Fig. at is a top view of the brakes and friction-wheels. Figs. 5, 6, and 7 are detail views of the driving and regulating mechanism.

Similar letters of reference indicate corresponding parts. i

In the drawings, a represents the main axis ofthe driving mechanism, and is provided with fast and loose pulleys b b and a belt or similar means of transmitting power. On the axle a is the cog-wheel 0, which meshes with wheel (1, running loose on shaft From wheel d motion is transmitted through'the train fg-hi to shaft Z0 and wheels 0 6 The wheels 0 e rotate in opposite directions, and with them the friction-wheels m m, Figs. 1 and 2. The

' friction-wheels n a, Figs. 1, 4, and 5, of the embroidering-machine are secured on the driving-shafts 0 0, from which reciprocating motion is imparted to the needle-carriages W W.

The friction-wheels m m and n n, being alter natelybrought into contact by the regulating devices, control the motions of the said neetile-carriages at the will of the operatorin thefollowing manner: J

The hand-lever B swings on shaft q, and is provided with the arms p p on its lower end.

and friction-wheels m m, and according to the position (rightor left side) of the lever B brings the forward or backward motion wheels at in into action alternately on the wheels'n'n, and through them to the needle-carriages W W. When in the central position shown in Fig. l. the motor is out of gear, though in motion.

Lever R is provided with a latch-bolt, r, for locking it in any desired position with respect to; the vibrating lever S. l.

o 21, Figs. 4 and 5, are cases secured to the fran1eofthemachine,and containsprings,which tend to hold brake-shoes against the frictionwheels at n. The brake-rods are provided with arms t0 t0, havingthe plates y 3 on their ends. The hand-lever R is provided with the plates as a which, whensaid hand-lever R is moved to the right or left by hand, or as a. portion of the escapement of the motor by the vibration of lever S, are brought intocontact with plates 3 y and release one of the friction-wheels a n from its brake-shoe and permit themovement of the needle-carriages.

The operation of the treadle mechanism is as follows: On the shaft 0 are the wheels at E K and eccentrics U D, the train B U D E receiving their motion from the gearwheel 67,

against which they are held by the spring A.

The wheel K is secured to shaft 0, and. turns independent of B UD E. The friction-gear B is fast to ,the eccentrics U Dand disk E. The disk E is formed with the two notches F F, and is provided with the pins 'i t", whichrest with their heads againstthe hollow gearwheel d when d is in contact with friction-gear B, and (passing through U D E) with their points against fast disk K, which disk K is provided with an offset, Gr, against which the pins strike at each half-revolution.

Figs. 2 and 3, L and M are latches oscillate ing on the stud N Fig. 3, and are held down by spring 0 The latch L fits with its noseshaped part into the notches F F of disk E. The nose of the twin latch M fits down between disks E and K, forming a prolongation oflatch L, adapted to engage with the ends of the pins l 1 between the disks E K or the offset G on disk K.

In Fig. 2 the'friction-gearB and geared frietion-wheel dare shown in contact. Therefore they, with the eccentrics U D, disk E, and pins it", turn together. As the pin t passes the ofiset G on fast disk K the said pin is forced back, and with it thegeared friction-wheel d, at least sufficiently so to release the frictionwheel B, and with it U, D, and E. The force of inertia will keep U D E turning until past the offset G, when the pin will rest against the side ofthe nose-shaped part of the latch M,

and the nose of the latch L falling at the same time into the notch F or F, the motion of B U DE is arrested. The geared friction-wheel at, being released by the backward push of pin 2' or t", is not affected by the stoppage.

It, now, the twin latches L and M are lifted and then dropped, the pin 71, being released, is forced forward by spring A, at the same time d and B come into contact, and during the next half-revolution the above-described operation is repea tedviz., the offset Gr forces back pin t, wheel (1, and spring A, and the latches L and M come into engagement one with the pin and the other with the notch F of disk E. The rotation of B U D E is thus completely arrested at every half-revolution.

The eccentric D is inclosed in a sliding loop, P, Fig. 6, which has alternate lateral motion. The arms P P of the loop P are connected with the bell-cranks QQ, and these to a double.- armed lever, S pivoted at T. The lateral motion is converted by the bell-cranks Q Q into vertical at the points v v, producing the so-called treadle in the known manner. Ateach haltrevolution of B U D E the lever S receives its motion, which is communicated to the needlecarriages W W, as above described.

The operation of the twin latches L and M i is as follows: The pedal L, oscillating on shaft p by means of a pawl, operates the ratchet- Wheel Y secured on the shaft 1). At the other end of shaft 10 there is a second and similar ratchet, Y, with the teeth of which the lower end of the rods S engages. At the top end ofsaid rod S there is a shoulder, E, on which rest the latches L and M. The depression of pedal L rotates the notches YY to the extent of one tooth and raises the rod S and also liberates it, when it is immediately forced down and ontothe next ratchet-tooth. The latches are then ready to engage with the notches F F and pins i 43, respectively.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a motor for an embroidering-machine,

gear-wheels 'd c f g h 'i t e e and frictionwheels mm, the axis a, and driving-shaft pulleys b b, in combination with friction-wheels n n 0 0 and needle-carriages driven thereby, substantially as shown and described.

2. The shaft 0 and spring a, gear-wheel d, friction-wheel B, eccentrics U D, disk E, provided with notches F F, the pins t t", latches L M, and disk K,provided with offset G, substantially as shown and described.

3. The eccentric U, levers S, and threearmed hand-lever R, provided with frictionwheels m m, substantially as shown and described.

41. The eccentric U, lever S, and lever It, provided with friction-wheels m m, in combination with the friction-wheels n n, shafts 0 0, and needle-carriage W W, substantially as shown and described.

5. The friction-wheels n n, in combination with the. brakes v v, as shown. and means for alternately releasing the wheels or. n,as shown and described.

6. The lever B, provided with the plates X X, in combination with the wheels n n, brakes e 2;, arms to w, and plates 1 y, as shown and described.

7. The loop P of the lever S, having the arms P P, the angle-levers Q Q, the double lever S pivot T, and the eccentric D, for operation as described.

8. The latch-tripping mechanism,consisting essentially of the pedal L, provided with pawl Z, ratchetY Y. shaft 1), and rod S provided with shoulder substantially as shown and described.

9. The spring-pressed latches L M and stud N, in combination with the disk E, having notches F F, and mechanism for releasing said latches from disk E, substantially as shown and described.

10. The combination, with thedisk E, provided with notches F F, and latches L and M, of the rod S provided with shoulder E, ratchets Y Y, shaft 1?, and pedal L, having pawl Z, substantially as shown and described.

11. The combination of the geared frictionwheel d, spring A, friction-wheel B, eccentrics U and D, and disk E with the pins it" and the disk K, provided with the ofl'set Gr, substantially as shown and described.

12. The combination, with the pins 1' t", of the wheels dand B, latches L M, and spring A, whereby eccentrics U D are at each halfturn released from the action of wheel d and momentarily stopped, substantially as shown and described.

In testimony whereof I affix mysignature in presence of two witnesses.

CARL WENNER.

Witnesses:

ALBERT WENNER-FISCHBAOHER, E. BlRLooHER-NAFF.

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